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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/show.h>
#include <drizzled/session.h>
#include <drizzled/statement/savepoint.h>
#include <drizzled/transaction_services.h>
#include <drizzled/named_savepoint.h>
#include <drizzled/session/transactions.h>
#include <string>
#include <deque>
using namespace std;
namespace drizzled {
bool statement::Savepoint::execute()
{
if (! (session().options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
{
/* AUTOCOMMIT is on and not in a BEGIN */
session().my_ok();
}
else
{
/*
* If AUTOCOMMIT is off and resource contexts are empty then we need
* to start a transaction. It will be empty when SAVEPOINT starts the
* transaction. Table affecting statements do this work in lockTables()
* by calling startStatement().
*/
if ( (session().options & OPTION_NOT_AUTOCOMMIT) &&
(transaction().all.getResourceContexts().empty() == true) )
{
if (session().startTransaction() == false)
{
return false;
}
}
/*
* Look through the savepoints. If we find one with
* the same name, delete it.
*/
deque<NamedSavepoint> &savepoints= transaction().savepoints;
deque<NamedSavepoint>::iterator iter;
for (iter= savepoints.begin();
iter != savepoints.end();
++iter)
{
NamedSavepoint &sv= *iter;
const string &sv_name= sv.getName();
if (my_strnncoll(system_charset_info,
(unsigned char *) lex().ident.str,
lex().ident.length,
(unsigned char *) sv_name.c_str(),
sv_name.size()) == 0)
break;
}
if (iter != savepoints.end())
{
NamedSavepoint &sv= *iter;
(void) TransactionServices::releaseSavepoint(session(), sv);
savepoints.erase(iter);
}
NamedSavepoint newsv(lex().ident.str, lex().ident.length);
if (TransactionServices::setSavepoint(session(), newsv))
{
return true;
}
else
{
savepoints.push_front(newsv);
session().my_ok();
}
}
return false;
}
} /* namespace drizzled */
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